Here are the 1979 Raleigh catalog pic and spec for the Competition GS. I also had a silver one awhile back and sold it pretty much as original except for the wheels (though I added a Campy NR crankset) on eBay and fetched just a bit more than you paid. I thought it would go higher, but the paint on mine wasn't in very good shape. For awhile, I had it set up as a 650B bike, which worked really well, and made for much less of a Sporty ride and more of a tourer, but that's my preference.

Neal